Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id: except.c 3553 2011-05-05 06:14:19Z nanang $ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pj/except.h> |
| 21 | #include <pj/rand.h> |
| 22 | #include <stdio.h> |
| 23 | #include <stdlib.h> |
| 24 | |
| 25 | /** |
| 26 | * \page page_pjlib_samples_except_c Example: Exception Handling |
| 27 | * |
| 28 | * Below is sample program to demonstrate how to use exception handling. |
| 29 | * |
| 30 | * \includelineno pjlib-samples/except.c |
| 31 | */ |
| 32 | |
| 33 | static pj_exception_id_t NO_MEMORY, OTHER_EXCEPTION; |
| 34 | |
| 35 | static void randomly_throw_exception() |
| 36 | { |
| 37 | if (pj_rand() % 2) |
| 38 | PJ_THROW(OTHER_EXCEPTION); |
| 39 | } |
| 40 | |
| 41 | static void *my_malloc(size_t size) |
| 42 | { |
| 43 | void *ptr = malloc(size); |
| 44 | if (!ptr) |
| 45 | PJ_THROW(NO_MEMORY); |
| 46 | return ptr; |
| 47 | } |
| 48 | |
| 49 | static int test_exception() |
| 50 | { |
| 51 | PJ_USE_EXCEPTION; |
| 52 | |
| 53 | PJ_TRY { |
| 54 | void *data = my_malloc(200); |
| 55 | free(data); |
| 56 | randomly_throw_exception(); |
| 57 | } |
| 58 | PJ_CATCH_ANY { |
| 59 | pj_exception_id_t x_id; |
| 60 | |
| 61 | x_id = PJ_GET_EXCEPTION(); |
| 62 | printf("Caught exception %d (%s)\n", |
| 63 | x_id, pj_exception_id_name(x_id)); |
| 64 | } |
| 65 | PJ_END |
| 66 | return 1; |
| 67 | } |
| 68 | |
| 69 | int main() |
| 70 | { |
| 71 | pj_status_t rc; |
| 72 | |
| 73 | // Error handling is omited for clarity. |
| 74 | |
| 75 | rc = pj_init(); |
| 76 | |
| 77 | rc = pj_exception_id_alloc("No Memory", &NO_MEMORY); |
| 78 | rc = pj_exception_id_alloc("Other Exception", &OTHER_EXCEPTION); |
| 79 | |
| 80 | return test_exception(); |
| 81 | } |
| 82 | |